2N690A

Scrs Overview

The Central Semiconductor Corp 2N690A is a Silicon Controlled Rectifier (SCR) designed for phase control applications. It features a robust construction capable of handling high current and voltage levels, with ratings typically spanning 25 Amps RMS and voltages from 200 to 800 Volts depending on the specific suffix variant. The device utilizes a standard TO-204AA (TO-3) metal case package, facilitating efficient heat dissipation through direct mounting to heatsinks. This component is engineered for reliability in demanding power electronics environments requiring precise thyristor switching capabilities.

Scrs Feature Summary

• Engineered specifically for phase control applications within power circuits
• Utilizes a durable metal case package for effective thermal management
• Provides high surge current capability suitable for industrial loads

Scrs Applications

• Industrial motor speed control systems
• High-power heating element regulation
• Lighting dimmer circuits for commercial installations

Scrs Procurement Notes

Verify the exact voltage rating suffix required for your application, as the base part number covers a range of breakdown voltages. Confirm that the TO-3 metal package fits your mechanical constraints. Ensure proper isolation techniques are used during installation due to the exposed collector tab. Cross-reference datasheets for specific thermal resistance values relevant to your heatsink design.

Scrs Selection Notes

Select this component when high current capacity and ruggedness are prioritized over compact size. The TO-3 package requires adequate board space and mounting hardware. Consider the specific voltage variant needed to match the circuit's peak inverse voltage requirements. Evaluate thermal management solutions early, as the device generates significant heat under load conditions.

Scrs Part Context

The 2N690A belongs to a family of silicon controlled rectifiers manufactured by Central Semiconductor Corp. These devices are classified as thyristors, distinct from bipolar transistors or diodes. The product line focuses on medium-to-high power applications where reliable switching and high current handling are essential. The TO-3 package is a legacy form factor still widely used in industrial equipment.

Scrs Replacement Considerations

Direct replacements include other 25 Amp SCR models in TO-3 packages from manufacturers like International Rectifier or Knox Semiconductor. Verify that the replacement matches the specific voltage rating and gate trigger current specifications. Ensure the pinout configuration remains identical to avoid circuit modification.